Have I Plateaued ? Cant seem to lose any more weight!

Well.. to be honest could be what I am eating. I have gotten very sloppy with my eating habits. I keep gaining and losing the same 5 lbs. I was on a losing streak up until last October and then a standstill. I met a new boy friend and then GAINED about 10 lbs in a month,, that finally came off and now I am STUCK!!!